Pleroma vs Mastodon: Privacy Comparison
This in-depth comparison weighs Pleroma against Mastodon along six decisive privacy dimensions: how data is collected, how encryption is implemented, how data is shared with third parties, what privacy controls users get, how transparent each service is, and what their historical track record looks like. The two cover much the same ground, yet they handle user privacy in very different ways. What our review shows is that Mastodon delivers a clearly stronger privacy experience on balance, even though each option has its own relative pluses and minuses that are worth examining closely.
Reading the Scorecard
The most useful starting point is the overall tally and the single dimension that decided it. Across the six privacy dimensions we score, Mastodon finishes ahead of Pleroma, 54/60 to 37/60. That total reflects a side-by-side review in which one service is consistently the more privacy-respecting choice, even though both cover the same functional ground.
The largest single-dimension gap is in Data Collection, where Mastodon leads by 3 points -- Pleroma 7/10 to Mastodon 10/10. On Encryption the margin nearly vanishes: Pleroma 8/10 against Mastodon 10/10. Continue for the full reasoning behind each category score.
Data Collection Practices
Data collection is the foundation of any privacy assessment. The extent to which a service collects, retains, and processes user data directly determines the privacy risks associated with its use. Mastodon demonstrates more restrained data collection practices, gathering only the minimum data necessary for service functionality. The other service collects a broader range of data including behavioral patterns, device identifiers, and usage analytics that extend beyond core service requirements. We scored Pleroma 7/10 and Mastodon 10/10 in this category. The difference reflects not just the volume of data collected but the purpose and necessity of that collection.
How Strong Is the Encryption
Encryption guards user data as it moves and while it sits at rest, and how well it is built differs enormously from one service to the next. Mastodon puts tougher encryption in place, with sturdier protocols shielding data in transit and stronger safeguards for what is stored. The two implementations part ways on coverage (which data actually gets encrypted), on strength (which algorithms and key lengths back it up), and on whether end-to-end encryption is in play (which keeps even the provider from reading user content). For encryption, Pleroma scored 8/10 while Mastodon scored 10/10.
Who Else Gets Your Data
A service's willingness to hand data to outside parties is a make-or-break privacy factor. That covers advertising networks, analytics providers, business partners, and what happens when governments come asking. Mastodon keeps a tighter lid on who can reach user data. These sharing habits shape security as much as privacy, since every extra party granted access becomes one more way a breach could happen. Scores: Pleroma 4/10, Mastodon 7/10.
What You Can Manage Yourself
The availability and effectiveness of user-facing privacy controls determine how much agency individuals have over their own data. This includes settings for data collection opt-out, download and deletion capabilities, granular permission controls, and the ease with which users can exercise their rights under applicable privacy regulations. Mastodon provides more comprehensive and accessible privacy controls. Scores: Pleroma 5/10, Mastodon 8/10.
Transparency
Transparency comes down to how plainly a service explains what it does with data. It shows up in how readable the privacy policy is, whether transparency reports are published, how quickly privacy questions get answered, and whether policy changes are communicated up front. Mastodon comes across as the more transparent of the two overall. Plain, easy-to-find privacy communication is the bedrock of informed consent and trust. Scores: Pleroma 6/10, Mastodon 9/10.
Track Record Over Time
The record of privacy incidents, regulatory run-ins, and how a service answers vulnerabilities offers context you cannot ignore. Mastodon holds the stronger track record here, with a smaller count of incidents and a more responsible response to the problems that did surface. More often than not, what a service did in the past is the best guide to its future privacy conduct. Scores: Pleroma 7/10, Mastodon 10/10.
Overall Verdict
Our comprehensive analysis gives Pleroma a total score of 37/60 and Mastodon a total score of 54/60. The overall winner for privacy is Mastodon. While both services serve similar functional needs, the winner demonstrates a more privacy-respecting approach across the dimensions that matter most. That said, no service is perfect, and users should always configure privacy settings actively regardless of which option they choose. We recommend supplementing your choice with additional privacy tools, a VPN, DNS-level ad blocker, and privacy-focused browser, to build a comprehensive privacy posture. If your threat model requires the strongest possible privacy, consider whether an even more privacy-focused alternative exists in this category beyond the two compared here.